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--
-- FLOAT8
--
CREATE TABLE FLOAT8_TBL(f1 float8);
INSERT INTO FLOAT8_TBL(f1) VALUES ('0.0');
INSERT INTO FLOAT8_TBL(f1) VALUES ('1004.30');
INSERT INTO FLOAT8_TBL(f1) VALUES ('-34.84');
INSERT INTO FLOAT8_TBL(f1) VALUES ('1.2345678901234e+200');
INSERT INTO FLOAT8_TBL(f1) VALUES ('1.2345678901234e-200');
SELECT '' AS five, FLOAT8_TBL.*;
SELECT '' AS four, f.* FROM FLOAT8_TBL f WHERE f.f1 <> '1004.3';
SELECT '' AS one, f.* FROM FLOAT8_TBL f WHERE f.f1 = '1004.3';
SELECT '' AS three, f.* FROM FLOAT8_TBL f WHERE '1004.3' > f.f1;
SELECT '' AS three, f.* FROM FLOAT8_TBL f WHERE f.f1 < '1004.3';
SELECT '' AS four, f.* FROM FLOAT8_TBL f WHERE '1004.3' >= f.f1;
SELECT '' AS four, f.* FROM FLOAT8_TBL f WHERE f.f1 <= '1004.3';
SELECT '' AS three, f.f1, f.f1 * '-10' AS x
FROM FLOAT8_TBL f
WHERE f.f1 > '0.0';
SELECT '' AS three, f.f1, f.f1 + '-10' AS x
FROM FLOAT8_TBL f
WHERE f.f1 > '0.0';
SELECT '' AS three, f.f1, f.f1 / '-10' AS x
FROM FLOAT8_TBL f
WHERE f.f1 > '0.0';
SELECT '' AS three, f.f1, f.f1 - '-10' AS x
FROM FLOAT8_TBL f
WHERE f.f1 > '0.0';
SELECT '' AS one, f.f1 ^ '2.0' AS square_f1
FROM FLOAT8_TBL f where f.f1 = '1004.3';
-- absolute value
SELECT '' AS five, f.f1, @f.f1 AS abs_f1
FROM FLOAT8_TBL f;
-- truncate
SELECT '' AS five, f.f1, %f.f1 AS trunc_f1
FROM FLOAT8_TBL f;
-- round
SELECT '' AS five, f.f1, f.f1 % AS round_f1
FROM FLOAT8_TBL f;
-- ceil
select ceil(f1) as ceil_f1 from float8_tbl f;
-- floor
select floor(f1) as floor_f1 from float8_tbl f;
-- sign
select sign(f1) as sign_f1 from float8_tbl f;
-- square root
SELECT sqrt(float8 '64') AS eight;
SELECT |/ float8 '64' AS eight;
SELECT '' AS three, f.f1, |/f.f1 AS sqrt_f1
FROM FLOAT8_TBL f
WHERE f.f1 > '0.0';
-- take exp of ln(f.f1)
SELECT '' AS three, f.f1, exp(ln(f.f1)) AS exp_ln_f1
FROM FLOAT8_TBL f
WHERE f.f1 > '0.0';
-- cube root
SELECT ||/ float8 '27' AS three;
SELECT '' AS five, f.f1, ||/f.f1 AS cbrt_f1 FROM FLOAT8_TBL f;
SELECT '' AS five, FLOAT8_TBL.*;
UPDATE FLOAT8_TBL
SET f1 = FLOAT8_TBL.f1 * '-1'
WHERE FLOAT8_TBL.f1 > '0.0';
SELECT '' AS bad, f.f1 * '1e200' from FLOAT8_TBL f;
SELECT '' AS bad, f.f1 ^ '1e200' from FLOAT8_TBL f;
SELECT '' AS bad, ln(f.f1) from FLOAT8_TBL f where f.f1 = '0.0' ;
SELECT '' AS bad, ln(f.f1) from FLOAT8_TBL f where f.f1 < '0.0' ;
SELECT '' AS bad, exp(f.f1) from FLOAT8_TBL f;
SELECT '' AS bad, f.f1 / '0.0' from FLOAT8_TBL f;
SELECT '' AS five, FLOAT8_TBL.*;
-- test for over- and underflow
INSERT INTO FLOAT8_TBL(f1) VALUES ('10e400');
INSERT INTO FLOAT8_TBL(f1) VALUES ('-10e400');
INSERT INTO FLOAT8_TBL(f1) VALUES ('10e-400');
INSERT INTO FLOAT8_TBL(f1) VALUES ('-10e-400');
-- maintain external table consistency across platforms
-- delete all values and reinsert well-behaved ones
DELETE FROM FLOAT8_TBL;
INSERT INTO FLOAT8_TBL(f1) VALUES ('0.0');
INSERT INTO FLOAT8_TBL(f1) VALUES ('-34.84');
INSERT INTO FLOAT8_TBL(f1) VALUES ('-1004.30');
INSERT INTO FLOAT8_TBL(f1) VALUES ('-1.2345678901234e+200');
INSERT INTO FLOAT8_TBL(f1) VALUES ('-1.2345678901234e-200');
SELECT '' AS five, FLOAT8_TBL.*;
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